太湖饮用水源地主要异味物质检测及其时空变化规律研究

Study on the Detection of the Main Odor Substances and the Temporal and Spatial Variation of the Drinking Water Source in Taihu

目的:建立顶空固相微萃取-气相色谱-质谱法同时检测水中9种异味物质的方法。方法:采用该方法对太湖苏州区域某饮用水源地异味物质含量进行检测。结果:对检测数据进行统计分析,苏州某饮用水源地致嗅的异味物质主要是2-甲基异崁醇;异味物质浓度高的月份主要集中在6—10月;太湖(苏州辖区)东部沿岸、南部沿岸2-甲基异莰醇和土臭素浓度水平高于同期西部沿岸及湖心区域。

Simultaneous determination of 9 kinds of odor compounds in water by headspace solid phase microextrac- tion coupled with gas chromatography - mass spectrometry.This method was used to detect the content of odor smell in a drinking water source in Taihu.Statistical analysis of test data, the Suzhou source of drinking water odor is main- ly caused by 2-MIB.The high concentration of odor substances in the month is mainly concentrated in 6-10 months. The 2-MIB and geosmin concentration levels of Taihu Lake （Suzhou area）along the east coast, southern coast is higher than the west coast and the central lake area.